CAOHC Practice Test Questions with Answers
CAOHC's primary objective? - Answer-train and certify OHCs and CDs
CAOHC recert? - Answer-Every 5 years
sector with highest occupational hearing loss - Answer-manufacturing
noise notch happens where - Answer-4000 Hz
early signs of noise in...
CAOHC Practice Test Questions with Answers CAOHC's primary objective? - Answer -train and certify OHCs and CDs CAOHC recert? - Answer -Every 5 years sector with highest occupational hearing loss - Answer -manufacturing noise notch happens where - Answer -4000 Hz early signs of noise induced hearing loss? - Answer -tinnitus, trouble w/ bg noise, relying on visual cues AL and PEL? - Answer -85 dBA and 90 dBA What are elements of hearing conservation program? - Answer -Audiometric monitering, employee training, engineering controls OSHA conservation amendment? - Answer -29 CFR 1910.95 First thing to accomplish in HCP? - Answer -perform noise hazard assessment. frequency is subjectively called - Answer -pitch human range of frequency? - Answer -20-20,000 Hz dB measures? - Answer -intensity range of intensity for human hearing? - Answer -0-140 dB steady state has duration of? - Answer -1 second or more aspect of sound perceived as loudness? - Answer -intensity noise less than one second? - Answer -impact/impulse gunfire noise? nail gun noise? - Answer -impulse; impact intensity is? - Answer -measure of amplitude or sound level weighting network scale per OSHA is? - Answer -A scale auditory effects of noise exposure include? - Answer -hearing loss, hyperacusis and tinnitus noise -induced loss includes? - Answer -notch at 4000 Hz, variable susceptibility among people, symmetrical and sensorineural pathology three tiny bones in middle ear - Answer -malleus, incus, stapes three tiny bones in middle ear form? - Answer -ossicular chain primary function of outer ear is? - Answer -collect sound waves and channel them down ear canal hearing loss from cerumen impaction is? - Answer -conductive hearing loss due to aging is? - Answer -presbycusis part of the ear damaged by noise exposure? - Answer -cochlea (Organ of Corti) part of the ear we pull back on to straighten ear during otoscopic exam? - Answer -pinna (auricle) purpose of otoscopic exam? - Answer -rule out anything that would interfere with hearing test or HPD fitting hearing loss caused by workplace noise will typically show audiogram with what configuration? - Answer -symmetrical notched audiogram this hearing loss would be referred for further workup to rule out medical causes - Answer -asymmetrical/unilateral part of ear that equalizes air pressure is called what? - Answer -Eustachian tube Mixed loss is what? - Answer -any combo of conductive or sensorineural loss in the same ear type of sensorineural hearing loss that may dictate medical emergency is? - Answer - sudden idiopathic hearing loss most obvious auditory sign of exposure to hazardous noise? - Answer -noise -induced hearing loss Effects from hazardous noise that cause a physical symptom such as hypertension or depression is what? - Answer -non-auditory effects
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